Nothing Special   »   [go: up one dir, main page]

CN114342167B - Battery pack and vehicle comprising same - Google Patents

Battery pack and vehicle comprising same Download PDF

Info

Publication number
CN114342167B
CN114342167B CN202080062439.0A CN202080062439A CN114342167B CN 114342167 B CN114342167 B CN 114342167B CN 202080062439 A CN202080062439 A CN 202080062439A CN 114342167 B CN114342167 B CN 114342167B
Authority
CN
China
Prior art keywords
battery
battery pack
tray
fastening
module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202080062439.0A
Other languages
Chinese (zh)
Other versions
CN114342167A (en
Inventor
池昊俊
朴真用
金炅模
金敬友
文祯晤
朴真夏
陈喜俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Energy Solution Ltd
Original Assignee
LG Energy Solution Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Energy Solution Ltd filed Critical LG Energy Solution Ltd
Publication of CN114342167A publication Critical patent/CN114342167A/en
Application granted granted Critical
Publication of CN114342167B publication Critical patent/CN114342167B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

Provided are a battery pack capable of improving energy density while ensuring structural stability of a battery module, and a vehicle including the same. The battery pack according to the present invention includes: at least one battery module and a battery pack case for accommodating the battery module therein. The battery module includes: a battery cell stack including at least one battery cell; and a pair of end plates provided at both sides of the battery cell in the length direction to be in close contact with the front and rear sides of the battery cell stack. The battery pack case includes: a tray for mounting the battery module on an upper surface thereof; and a top cover having an outer periphery that is engaged with the outer periphery of the tray in a face-to-face manner on an upper surface of the tray in a state in which the battery module is accommodated therein. The end plates thus provide mechanical support to protect the battery cells.

Description

Battery pack and vehicle comprising same
Technical Field
The present disclosure relates to a battery pack and a vehicle including the same, and more particularly, to a battery pack having a structure for mounting a battery module with space efficiency and a vehicle including the same.
Background
Unlike primary batteries, which are non-rechargeable batteries, secondary batteries are rechargeable batteries, and they are used not only for mobile devices but also for Electric Vehicles (EVs) and hybrid vehicles (HEVs). Currently, widely used secondary batteries include lithium ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel hydrogen batteries, and nickel zinc batteries. The operating voltage of the unit secondary battery cell (i.e., the unit battery cell) is about 2.5V to 4.6V. Therefore, when a higher output voltage is required, the battery pack is constructed by connecting the battery cells in series. In addition, the battery pack may be constructed by connecting the battery cells in parallel according to the charge/discharge capacity required for the battery pack. Accordingly, the number of battery cells included in the battery pack may be differently set according to a desired output voltage or charge/discharge capacity.
When a battery pack is constructed by connecting battery cells in series/parallel, a battery module including at least one battery cell (preferably a plurality of battery cells) is generally formed, and the battery pack module is constructed using at least one battery module to which other elements are added. Here, the battery module includes battery cells connected in series or parallel, and the battery pack includes battery modules connected in series or parallel to increase capacity and output.
Fig. 1 is a schematic view showing the arrangement of battery modules in a conventional battery pack, fig. 2 is a sectional view of the battery pack of fig. 1 taken along line ii-ii ', and fig. 3 is a sectional view of the battery pack of fig. 1 taken along line iii-iii'.
Fig. 1 shows a total of 8 battery modules 20 arranged in a 2×4 matrix in the X direction (horizontal, longitudinal direction of the battery modules) X Y direction (vertical, width direction of the battery modules) on the XY plane, and some elements are omitted in order to more clearly show the arrangement of the battery modules 20.
The battery pack 1 is described with reference to fig. 1 to 3, and the battery modules 20 are mounted in the battery pack case 10 and protected by the impact beam 30 as a rigid structure.
The battery pack housing 10 includes a tray 12 and a top cover 14. The battery module 20 includes a plurality of battery cells 22 and a module case 24 accommodating the battery cells 22. The battery module 20 is mounted on the tray 12, and the battery module 20 and the tray 12 are fastened by mounting bolts 40. The top cover 14 and the tray 12 are assembled together with the sealing member 50 interposed between the top cover 14 and the side wall 12a of the tray 12.
Since the battery module 20 includes a plurality of battery cells 22 combined together, when overvoltage, overcurrent, or overheat occurs in some of the battery cells, safety and operation efficiency of the battery module 20 are very problematic, and thus a device for detecting and controlling the overvoltage, the overcurrent, or the overheat is required. Thus, voltage sensors are connected to the battery cells 22 to monitor and control operating conditions in real time or at regular time intervals. The detecting device is mounted or connected by a plurality of wirings, and conventionally, a wire harness 60 including the wirings is arranged between the battery modules 20 through the center of the battery pack 1.
The battery module 20 and the battery pack case 10 are separated from each other, and the battery module 20 is a basic unit (basic unit) of the battery pack 1, and it is a structure including battery cells 22 that are disposed in the battery pack case 10 and protected by the rigid structure of the battery pack case 10. The battery pack case 10 is a rigid structure protecting the battery modules 20.
In the case of an electric vehicle, unexpected impacts and vibrations may be applied to the battery pack 1 while traveling. In this case, the electrical connection between the battery modules 20 may be broken, or the battery pack case 10 supporting the battery modules 20 may be deformed. Therefore, a battery pack, particularly for an electric vehicle, needs to have a durability high enough to withstand external impact and vibration.
To meet this need, the battery modules 20 are arranged on the tray 12 at a predetermined distance d from the pack case 10 to protect the battery modules 20. In order to protect the battery modules 20 of the battery pack 1 from external impact, a gap d exists to separate the region of the battery pack case 10 from the region of the battery modules 20. However, not only a separate space for the mounting bolts 40 in the module case 24 of the battery module 20 but also a space for maintaining the gap d is required, which results in a loss of use of the inner space of the battery pack 1.
The impact beam 30 serves to increase the mechanical strength of the battery pack 1. Here, the impact beam 30 is a beam structure mounted in the tray 12 of the battery pack case 10, and may be disposed between the plurality of battery modules 20 in all directions of the battery modules 20 including the left-right direction, the up-down direction, and the front-rear direction. The tray 12 having the impact beam 30 has high impact resistance and is not easily affected by external impact or vibration. However, the area occupied by the impact beam 30 and the gap d between the impact beam 30 and the battery module 20 reduce the space for mounting the battery module 20. Further, when necessary components such as a cooling configuration (e.g., the heat sink 70) are added, the volumetric rate or energy density of the battery pack 1 including the same will be lower.
Also, the tray 12 may sag S due to the weight of the battery module 20, and a space for supporting a lower rigid structure of the weight is required, resulting in a space loss.
Although there are practical difficulties in achieving the mechanical strength and energy density of the battery pack, recently, there has been an increasing demand for the battery pack satisfying the requirements of structural stability, cooling performance and high energy density in the industrial fields related to secondary batteries.
Disclosure of Invention
Technical problem
The present disclosure is directed to solving the above problems, and therefore, the present disclosure is directed to providing a battery pack having battery module structural stability and improved energy density.
The present disclosure is also directed to a vehicle including a battery pack.
These and other objects and advantages of the present disclosure will be understood from the following description, and will be apparent from the embodiments of the present disclosure. Furthermore, it is to be readily understood that the objects and advantages of the present disclosure are achieved by the means set forth in the appended claims and combinations thereof.
Technical proposal
In order to achieve the above object, a battery pack according to the present disclosure includes at least one battery module and a battery pack case for accommodating the battery module, the battery module including: a battery cell stack including at least one battery cell; and a pair of end plates disposed in close contact with the front and rear sides of the battery cell stack on both sides in the length direction of the battery cell, and the battery pack case includes: a tray on an upper surface of which the battery module is mounted; and a top cover, an outer circumference of which is coupled in contact with an outer circumference of the tray on an upper surface of the tray when the battery module is received inside, wherein the end plate provides mechanical support to protect the battery cells.
The end plates protect the battery cells from impacts applied to the front and rear sides of the battery pack.
In one embodiment, a battery module includes: bus bar frames assembled on the front and rear sides of the battery cell stack; an insulating cover coupled to an outer side of the bus bar frame; and a side plate coupled to the outermost battery cells of the battery cell stack, and the end plate is a plate-shaped structure covering the outside of the insulating cover.
In the present disclosure, the battery pack may further include a sealing member interposed between the outer circumference of the tray and the outer circumference of the top cover, which are coupled in contact with each other.
The top cover may have a fastening extension portion at the outer circumference, which is bent and extended in the outward direction of the battery pack for fastening to the tray, and the fastening element may be inserted into the fastening extension portion.
Here, the tray may have a step at the outer circumference, which is bent upward from the mounting region of the battery module to match the fastening extension, and the step may be coupled to the fastening extension by a fastening element provided at a sidewall on the step.
Further, here, any one of the pair of end plates may have a flange, which may be provided at a height between the fastening extension of the top cover and the step of the tray, such that the flange is placed at the side wall, and the fastening element may be inserted into the flange.
Also, here, a fastening seat may be formed at the bottom of the other end plate of the pair of end plates, and the fastening element may be inserted into a bracket installed in the tray through the fastening seat.
Preferably, the wire harness is disposed in a space between the top cover and the side wall.
Specifically, it is preferable that a pair of end plates be shared between a plurality of battery modules to integrally connect the plurality of battery modules.
In a specific example, the battery modules are arranged in a 2×n matrix (n is 1 or more) in the X direction (the length direction of the battery cells) X Y direction on the XY plane, the battery modules placed side by side in the X direction are arranged such that the terminals face each other, and a pair of end plates are shared between the battery modules placed in the Y direction.
In this case, it is preferable that the end plate disposed on the outer side of the battery pack among the pair of end plates has a flange disposed at a height between the fastening extension of the top cover and the step of the tray such that the flange is placed on the side wall, the fastening element is inserted into the flange, and the fastening seat is formed at the end plate bottom on the inner side of the battery pack among the pair of end plates, and the fastening element is inserted into the bracket mounted in the tray through the fastening seat.
In another embodiment, the battery module further includes: bus bar frames assembled on the front and rear sides of the battery cell stack; an insulating cover coupled to an outer side of the bus bar frame; and a side plate coupled to the outermost battery cells of the battery cell stack, wherein two battery modules are coupled by the center plate to form a large module, and at least one large module is included in the battery pack.
Preferably, at least two large modules are arranged in one direction and a pair of end plates is shared on the outside of the insulating cover to form a sub-group.
In this case, two subgroups may be arranged along the length direction of the battery cell.
Preferably, empty spaces are formed between adjacent large modules in the sub-group.
The battery side member may be further coupled to an outer side of at least one of the pair of end plates.
The battery side beams may be side walls of the tray.
Further, according to the present disclosure, a vehicle including the above-described battery pack may be provided. The vehicle may include an Electric Vehicle (EV) or a hybrid-electric vehicle (HEV).
Technical effects
According to one aspect of the present disclosure, a battery pack having a structure for space-efficiently mounting battery modules is provided.
According to another aspect of the present disclosure, the strength and volume rate of the battery pack may be increased. The volume rate of the battery cells/battery packs may be increased by 9% or more.
According to still another aspect of the present disclosure, two battery modules are handled as units of an array, and the array is diversified by expansion of one unit, thereby freely realizing various capacities of battery packs.
Drawings
The accompanying drawings illustrate embodiments of the present disclosure and, together with the detailed description of the disclosure described below, serve to provide further understanding of technical aspects of the disclosure, and therefore the disclosure should not be construed as limited to the accompanying drawings.
Fig. 1 is a schematic view illustrating an arrangement of battery modules in a conventional battery pack.
Fig. 2 is a sectional view of the battery pack of fig. 1 taken along line ii-ii'.
Fig. 3 is a sectional view of the battery pack of fig. 1 taken along line iii-iii'.
Fig. 4 is a schematic view showing the arrangement of battery modules in a battery pack according to an embodiment of the present disclosure.
Fig. 5 is a sectional view of the battery pack of fig. 4 taken along line v-v'.
Fig. 6 is an exploded view of fig. 5 prior to assembly.
Fig. 7 is a diagram illustrating battery modules included in a battery pack according to an embodiment of the present disclosure.
Fig. 8 is a diagram illustrating a comparison between a conventional battery pack and a battery pack according to an embodiment of the present disclosure.
Fig. 9 is a top view of another battery pack according to another embodiment of the present disclosure.
Fig. 10 is a view illustrating a battery module included in the battery pack of fig. 9.
Fig. 11 is a diagram illustrating a large module including two integrated battery modules of fig. 10.
Fig. 12 is a diagram illustrating a sub-battery pack including three integrated large-sized modules of fig. 11.
Fig. 13 is a diagram illustrating a vehicle according to still another embodiment of the present disclosure.
Detailed Description
The present disclosure will become apparent by describing in detail preferred embodiments thereof with reference to the attached drawings. It is to be understood that the disclosed embodiments are provided for purposes of illustration to aid in understanding the present disclosure, and that the present disclosure may be embodied in various forms other than the disclosed embodiments. In addition, the drawings are not to actual scale and some components may be exaggerated to aid in understanding the present invention.
That is, the embodiments described herein and the examples shown in the drawings are only the most preferred embodiments of the present disclosure and are not intended to fully describe technical aspects of the present disclosure, so it should be understood that other equivalents and modifications may be made thereto at the time of filing the application.
Fig. 4 is a schematic view showing the arrangement of battery modules in a battery pack according to an embodiment of the present disclosure. Fig. 5 is a sectional view of the battery pack of fig. 4 taken along line v-v'. Fig. 6 is an exploded view of fig. 5 prior to assembly. Fig. 7 is a diagram illustrating battery modules included in a battery pack according to an embodiment of the present disclosure.
Fig. 4 shows an example of a total of 8 battery modules 200 arranged in a 2×4 matrix in the X direction (horizontal, longitudinal direction of the battery modules) ×y direction (vertical, width direction of the battery modules) on the XY plane. However, the battery pack of the present disclosure is not limited to the arrangement of the battery pack a shown in fig. 4. The battery pack of the present disclosure may be any modified in the structure of 2 rows and 4 columns depending on the required capacity and the structure in which the battery pack is mounted. Basically, the battery modules are arranged in a 2×n (n is 1 or more) matrix.
Meanwhile, the battery pack a may further include various types of devices (not shown), such as, for example, a Battery Management System (BMS), a current sensor, and a fuse, to control charge/discharge of the battery. In order to more clearly illustrate the arrangement of the battery module 200, some elements are omitted in fig. 4. The battery modules 200 include terminals t, and the battery modules 200 arranged in the same column, for example, may be arranged such that the terminals t face each other. That is, the battery modules 200 placed side by side in the X direction may be arranged such that the terminals t face each other.
A battery pack a including at least one battery module 200 and a battery pack case 100 accommodating the battery module 200 according to an embodiment of the present disclosure is described with reference to fig. 4 to 7.
In the illustrated example, two battery modules 200 are mounted in the battery pack case 100 in the X direction. For convenience of description, the battery module disposed at the left side in the drawing is referred to as a first battery module 200a, and the battery module disposed at the right side is referred to as a second battery module 200b. In fig. 4, the first battery module 200a is located in a first row, and the second battery module 200b is located in a second row. Each battery module 200a, 200b does not use an impact beam as a rigid structure provided in a tray, but includes end plates 240 having the same rigidity. Each of the battery modules 200a, 200b basically includes at least a battery cell 212 and a pair of end plates 240 disposed on both sides of the battery cell 212 in the length direction.
As shown in fig. 7, in detail, the battery module 200 may include a battery cell stack 214 including at least one battery cell 212 (preferably, a plurality of battery cells 212) and various types of components. For example, the battery cells 212 may be pouch-shaped secondary batteries, and the plurality of battery cells 212 may be electrically connected to each other.
Although not shown, each of the battery cells 212 may include various components, for example, an electrode assembly, a battery case accommodating the electrode assembly, and electrode leads extending outside the battery case and electrically connected to the electrode assembly. The electrode lead may include a positive electrode lead and a negative electrode lead, the positive electrode lead may be connected to the positive electrode plate of the electrode assembly, and the negative electrode lead may be connected to the negative electrode plate of the electrode assembly. In addition, in the case of a bi-directional battery, the positive electrode lead and the negative electrode lead may extend to both sides of the battery cell 212 in the length direction, respectively. In the case of a unidirectional battery, the positive and negative electrode leads may extend side by side to one side in the length direction of the battery cell 212. The positive electrode lead and the negative electrode lead are connected to each other by a connection structure such as a bus bar to electrically connect the plurality of battery cells 212.
The battery module 200 may further include a lamination frame to laminate and protect the pouch-shaped secondary battery. The lamination frame is a device for laminating the secondary batteries, and functions not only to fix the secondary batteries from moving but also to laminate the secondary batteries to guide the assembly of the secondary batteries. For reference, the frame for lamination may be used interchangeably with various other terms such as battery cover and case.
In the case of a bi-directional battery, the bus bar frame 220 may be assembled at the sides where the positive and negative electrode leads extend, i.e., the front and rear sides of the battery cell stack 214. The bus bar frame 220 includes bus bars assembled with the frame and coupled to electrode leads of the battery cells 212 to connect the battery cells 212. The insulating cover 224 may be further coupled to the outside of the bus bar frame 220. The insulating cover 224 may be made of reinforced plastic having high electrical insulation and impact resistance.
The side plate 226 may be further coupled to the outermost battery cells 212 of the battery cell stack 214. The side plate 226 may be made of, for example, metal such as aluminum (Al). All metals can be used, but steel or aluminum is desirable in view of thermal conductivity, machinability and cost. Aluminum is particularly popular because of its low weight. As shown in fig. 2 and 3, the conventional battery module 20 requires a module case 24 wound around the entire surface of the battery cells 22, but the battery module 200 included in the battery pack a according to the embodiment of the present disclosure covers the front and rear surfaces and the side surfaces, and the upper and lower surfaces of the battery cell stack 214 are exposed to the outside, which is advantageous in terms of weight saving.
The end plates 240 are configured to protect and fix the battery cell stack 214 in the battery module 200, and a pair of end plates 240 may be provided on both sides of the length direction of the battery module 200 while not affecting the electrical connection portions between the plurality of battery cells 212. In this embodiment, the end plates 240 are disposed in close contact with the front and rear sides of the battery cell stack 214. For convenience of description, among the pair of end plates 240, the end plate placed on the outer side of the battery pack a is referred to as a first end plate 240a, and the end plate placed on the inner side of the battery pack a is referred to as a second end plate 240b in the drawings.
An end plate 240 may be provided separately for each battery module 200, and the end plate 240 may be shared between the battery modules 200 to integrally connect a plurality of battery modules 200. In an example, the other first battery modules (i.e., the battery modules in the first row arranged in the Y direction in fig. 4) before and after the first battery module 200a may share a pair of end plates 240. Likewise, the other second battery modules (i.e., the battery modules in the second row arranged in the Y direction in fig. 4) before and after the second battery module 200b may share a pair of end plates 240.
Preferably, a pair of end plates 240 are shared by a plurality of battery modules 200 to ensure structural integrity such as one. Therefore, it is easy to handle a plurality of battery modules 200 and assemble the battery pack a.
The end plate 240 may be a plate-like structure that covers at least one surface of the battery cell stack 214 in the battery module 200, and in the present embodiment, is the outside of the insulating cover 224. The end plate 240 is preferably made of metal having high mechanical strength and thermal conductivity, and the end plate 240 may replace an impact beam of a conventional battery structure. That is, the end plates 240 provide mechanical support to protect the battery cells 212. The end plate 240 may be made of metal such as aluminum or steel and a rolled material, and other materials may be used.
The battery pack case 100 includes a tray 110 and a top cover 140. The battery module 200 is mounted on the upper surface of the tray 110. The heat sink 170 may be placed on the tray 110 and the battery module 200 may be mounted thereon. Since the strength of the battery module 200 itself is increased, the battery pack case 100 included in the battery pack of the present disclosure may be manufactured to have a thinner design than the conventional battery pack case.
Although not shown, the battery module 200 may further include cooling fins interposed between the battery cells 212. The cooling fin is a thin member having thermal conductivity such as aluminum, and the end portion extends outward and is connected to a heat absorbing medium such as a heat sink 170 to transfer heat from the battery cell 212 to the outside.
The tray 110 provides a space in which a plurality of battery modules 200 are placed. The top cover 140 is configured to encapsulate and house the plurality of battery modules 200 together with the tray 110.
The tray 110 and the top cover 140 may have plate-shaped portions having a substantially wide area in the mounting regions 111, 141 of the battery module 200, and the tray 110 and the top cover 140 may have a hat-shaped cross section. The tray 110 and the top cap 140 are disposed above and below the battery module 200, respectively, to cover the lower and upper parts of the battery module 200.
A fastening extension 142 may be provided at the outer circumference of the top cover 140, the fastening extension 142 being bent and extended in the outward direction of the battery pack a for fastening to the tray 110, and the fastening extension 142 may have a plurality of first holes into which the fastening elements P1 are inserted. The fastening member P1 may include, for example, bolts or rivets, and it may be advantageous to use the bolts when each battery module 200 is removed from the battery pack case 100 for repair.
There may be a step 112 at the outer circumference of the tray 110, which step 112 is bent upward from the mounting region 111 of the battery module 200 to match the fastening extension 142 of the top cover 140. A sidewall 112a may be provided on the step 112. When the step 112 is high, the sidewall 112a may be omitted. The step 112 and the sidewall 112a may be a single member or may be formed by coupling members. The sidewall 112a may have a plurality of second holes in communication with the first holes of the fastening extension 142. The top cover 140 and the tray 110 may be coupled by inserting the fastening element P1 into the first and second holes. The fastening element P1 may fix the top cover and the tray 110 by applying pressure to the fastening extension 142 of the top cover 140 and the step 112 and a portion of the sidewall 112a of the tray 110 on the upper surface of the top cover 140. Preferably, the sealing element 150 is interposed between the fastening extension 142 of the top cover 140 and the side wall 112a of the tray 110 on the step 112. The outer circumferences of the top cover 140 are coupled to the outer circumference of the tray 110 in contact with each other on the upper surface of the tray 110. A sealing member 150 is included in close contact between the outer circumference of the tray 110 and the outer circumference of the top cover 140, which are coupled in contact with each other. The sealing member 150 prevents the wire harness 160 from being exposed to water through the battery pack a side.
Preferably, the first end plate 240a has a flange 242. The flange 242 may be disposed at a height between the fastening extension 142 of the top cover 140 and the step 112 of the tray 110 such that the flange 242 may be placed on the sidewall 112a. Flange 242 may have a third hole into which fastening element P2 is inserted. Additionally, the side wall 112a may have a fourth hole at a position further inward than the second hole of the battery pack a, the fourth hole communicating with the third hole of the flange 242. The first end plate 240a and the tray 110 may be coupled by inserting the fastening element P2. The fastening member P2 may include, for example, bolts or rivets, and it may be advantageous to use the bolts when each battery module 200 is removed from the battery pack case 100 for repair. The fastening member P2 may fix the flange 242 and the tray 110 by applying pressure to the flange 242 and the step 112 and a portion of the sidewall 112a of the tray 110 on the upper surface of the flange 242. The size and height of the flange 242 may be adjusted to the side wall 112a on which the flange 242 is placed.
The fastening seat 246 may be formed at the bottom of the second end plate 240b, and for example, the second end plate 240b and the tray 110 may be connected by installing the bracket 180 at a position corresponding to the fastening seat 246 at about the center of the tray 110 and inserting the fastening element P3. The fastening member P3 may include, for example, bolts or rivets, and it may be advantageous to use the bolts when each battery module 200 is removed from the battery pack case 100 for repair. The fastening element P3 may fix the second end plate 240b and the tray 110 by applying pressure to the fastening seat 246 and the bracket 180 on the upper surface of the tray 110.
Meanwhile, the tray 110 may be an assembled tray assembled by the side wall 112a and the bracket 180, or an integrally formed structure. In the case of integral molding, the number of parts and the number of assembly processes can be reduced, contributing to cost saving.
The battery pack case 100 may be made of plastic resin. In this case, the battery pack case 100 may be produced through an injection molding process. In the injection molding, the fastening extension 142 of the top cover 140, the first hole, the step 112 of the tray 110, the sidewall 112a, the second hole, and the fourth hole are easily formed. The battery pack case 100 may be manufactured by vacuum forming. Since the tray 110 and the top cover 140 have a cap shape in simple cross section, the shape can be formed by vacuum after placing the raw material of the solid sheet of uniform thickness on the mold.
The battery pack case 100 may be made of metal, for example, steel such as high-strength steel. In this case, the battery pack case 100 may be produced by stretch-type cold forming. Since the tray 110 and the top cover 140 have a cap shape in a simple cross section, the shape may be formed by at least one drawing (drawing) after a high strength steel having a uniform thickness is placed on a mold.
Since the battery module 200 includes a plurality of battery cells 212 combined together, when overvoltage, overcurrent, or overheat occurs in some of the battery cells, safety and operation efficiency of the battery module 200 are greatly problematic, and thus a device for detecting and controlling the overvoltage, the overcurrent, or the overheat is required. Thus, voltage sensors are connected to the battery cells 212 to monitor and control operating conditions in real time or at regular time intervals. The sensing device is mounted or connected through a plurality of wires, and in contrast to the conventional art, the present disclosure does not place the wire harness 160 including the wires at the center of the battery pack a between the battery modules 200, but may place the wire harness 160 on each of the two outer sides of the battery modules 200. Specifically, the wire harness 160 is disposed in the space between the top cover 140 and the side wall 112a.
In the present disclosure, the end plates 240a, 240b of the battery module 200 replace the impact beam of the conventional battery pack. The flange 242 is applied to the first end plate 240a of the T-like structure disposed at the outside, and the outer circumference of the top cover 140 may be lowered to the tray 110 accordingly. That is, the fastening extension 142 may descend to the tray 110. The fastening element P1 can be fastened to this position. With this structure, the wire harness 160 may be disposed at each of the two outer sides of the battery module 200.
Instead of a conventional battery pack case, the end plate 240 may function to provide mechanical support for the battery module 200 and protect the battery module 200 from external impacts. Specifically, the end plates 240 may protect the battery cells 212 from impacts applied to the front and rear sides of the battery cell stack 214. The tray 110 and the top cover 140 may maintain a sealing function as a cover.
Conventionally, only the battery pack case is provided with rigidity to protect the battery modules in the battery pack case, but the present disclosure provides rigidity to the battery modules 200 through the end plates 240. The end plates 240 of the battery module 200 form a rigid structure of the battery pack a in all directions.
According to the present disclosure, the battery module 200 itself forms a part of the rigid structure of the battery pack a, and may serve as the structure of the battery pack a. The battery pack case 100 may maintain a sealing function as a cover. Thus, the manufacture of the component/structure can be simplified. According to the present disclosure, the rigidity/spatial integration of the battery pack and the battery module is achieved by the rigidity integration, and the highest volume-rate effect is provided since the gap required between the battery pack case and the battery module and the structure such as the impact beam are omitted.
Fig. 8 is a diagram showing a comparison of a conventional battery pack 1 with a battery pack a according to an embodiment of the present disclosure.
When comparing the positions of the sealing members 50, 150, the sealing member 150 of the battery pack a according to the embodiment of the present disclosure may be disposed at a more outward and downward position than the conventional battery pack 1. Conventionally, the wire harness 60 is integrally provided between the battery modules 20, but in the present disclosure, the wire harness 160 is provided on each of the two outer sides of the battery modules 200.
Conventionally, the sealing member 50 is disposed at the top of the side wall 12a of the battery pack case. Since the sealing member 50 occupies some area to perform the closing function, it is difficult to reduce the size of the side wall 12a supporting the sealing member 50. By virtue of the flange 242 of the end plate 240, the present disclosure may lower the position of the sealing element 150. Thus, a new empty space is created between the top cover 140 and the sidewall 112a. Traditionally, the wire harness 60 is placed (integrally) between the impact beams 30, requiring a large central empty space. In the present disclosure, the wire harness 160 is placed on each of the two outer sides and is disposed in a new empty space created between the top cover 140 and the side wall 112a. Therefore, the empty space in the inner center of the battery pack a can be reduced. When the battery packs 1, a are the same in size, the battery module 200 may be made larger than the battery module 20 in size. Specifically, in the present disclosure, the end plates 240a, 240b of the battery module 200 replace the impact beam 30 of the conventional battery pack 1, and thus a space generated by eliminating the impact beam 30 disposed at the center of the battery pack 1 may be utilized. Therefore, as shown in fig. 8, when the length of the conventional battery module 20 is L1, the length of the battery module 200 according to the present disclosure is L2, and when comparing L1 and L2, it can be seen that the space of the battery module 200 can be significantly increased.
According to the present disclosure, the battery module 200 may be easily fixed and mounted on the tray 110 using the end plates 240 and the fastening elements P2, P3, and the mechanical strength of the battery module 200 is increased by the end plates 240. Additionally, the space in the battery pack case 100 in which the wire harness 160 is placed can be effectively utilized. Therefore, the battery module 200 can be mounted in the battery pack a with space efficiency, thereby improving space utilization. As the length L2 of the battery module 200 increases, the space for the battery module 200 may be increased, thereby increasing the volume ratio (floor area ratio) of the battery pack a.
Hereinafter, a battery pack according to another embodiment of the present disclosure will be described with reference to fig. 9 to 12. In the drawings and description, the same reference numerals are given to the same elements as those of the above embodiments, and redundant description is omitted herein.
Fig. 9 is a top view of another battery pack according to another embodiment of the present disclosure.
Referring to fig. 9, the battery pack B includes battery modules 200' arranged in a 2×6 matrix of two more columns than fig. 4. The battery module 200' is placed on the tray 110. The sealing member 150 is placed at the outer circumference of the tray 110. The sealing element 150 is for example a gasket.
Fig. 10 is a view illustrating a battery module included in the battery pack of fig. 9.
Referring to fig. 10, the battery module 200' includes battery cells 212, a bus bar frame 220, an insulating cover 224, and side plates 226, as with the battery module 200.
Fig. 11 shows a large module 250 including the two integrated battery modules 200' of fig. 10. The large-sized module 250 may include two battery modules 200' arranged side by side in the Y direction. The large module 250 may include a center plate 230, and the center plate 230 includes a blank space between two battery modules 200'. The center plate 230 may function to couple two battery modules 200' while maintaining them spaced apart from each other at a uniform distance. The center panel 230 includes empty space and may function to expand the absorbent unit during space contraction.
The conventional battery pack 1 includes a plurality of battery modules 20 in the unit of battery modules 20, and in the battery pack B according to another embodiment of the present disclosure, two battery modules 200' coupled through a center plate 230 form a large-sized module 250 as a basic unit. Thus, a bicell may be the basic unit of the array. For example, when one battery module 20, 200' includes 24 battery cells, the large module 250 includes 48 battery cells.
Fig. 12 is a diagram for describing a sub-group 260 including the integrated large module 250 of fig. 11.
The sub-group 260 may include at least two large modules 250 arranged in one direction (and in the present embodiment, in the Y-direction). In the present embodiment, for example, in order to complete the 2×6 arrangement, three large modules 250 may be arranged. That is, the sub-group 260 is an extension of the large module 250 as a basic unit of the array. The sub-group 260 is an integration of six battery modules 200'. The sub-group 260 has a blank space g (see fig. 9) between adjacent large modules 250. Therefore, when an external impact is applied to the battery pack B, the impact is hardly transmitted to the battery module 200 'through the large-sized module 250, thereby preventing the battery module 200' from being damaged. In addition, due to the empty space g, when an event such as a fire occurs in one large module 250, it is possible to prevent the fire from spreading to the other large module 250, thereby securing the safety of the battery pack B while using it.
In the large module 250 arranged in the Y direction, a pair of end plates 240 are coupled on both sides in the Y direction. The foregoing example describes a plurality of battery modules 200 sharing a pair of end plates 240, which is an example. A pair of end plates 240 are shared on the outer side of the insulating cover 224 of each battery module 200'. Here, in order to enhance rigidity, the following examples are given: wherein battery side member 270 may be further coupled to at least one of a pair of end plates 240. Specifically, battery side member 270 placed on the outer side of battery B may be side wall 112a of tray 110 mentioned in the previous embodiment. Battery side member 270 and side wall 112a may coexist, or battery side member 270 and side wall 112a may mate.
End plate 240 and battery side members 270 are fastened simultaneously to a plurality of large modules 250, for example, by fastening bolts 280. Since the end plate 240 is made of a material having rigidity, the sub-group 260 becomes a unit structure having rigidity high enough to be regarded as a battery pack, and it is easy to handle and facilitates the assembly of the battery pack B.
Conventionally, when mounting battery modules on a tray or replacing battery modules, it is necessary to align each battery module with a battery pack case and an impact beam in front-rear and left-right directions, resulting in low operability. However, according to the present disclosure, each sub-group 260 can be easily handled so that the operability is high.
In the present embodiment, in order to complete the 2×6 arrangement, two subgroups 260 are placed side by side in the X direction (i.e., the length direction of the battery cells). To satisfy an arrangement other than the 2×6 arrangement, the number of subgroups and the number of large modules included in the subgroups may be changed by those skilled in the art. As described above, the present disclosure takes a large module including two battery modules 200' as a unit of an array, and implements various arrays through expansion of one unit, thereby freely implementing various capacity battery packs.
As described above, in the present embodiment, specifically, the connection between the battery modules 200' in the sub-group 260 is established through the end plate 240, and thus the rigid structure required for the battery pack B is completed in units of the sub-group 260. In the same manner as in the previous embodiment, the battery B may further include a battery case 100 that maintains a sealing function as a cover. Thus, the manufacture of the components/structures (and in particular, the components/structures of the battery pack case 100) may be simplified.
As described above, the conventional battery pack 1 has space loss due to the gaps between the battery modules 20 and the battery pack case 10. These gaps are not required by the present disclosure. When the large module 250 includes 48 battery cells, the simulation result shows that the volume rate is increased by 9% compared to the conventional battery pack 1 including the battery module 20 having 24 battery cells. According to the present disclosure, the strength and the volume rate of the battery pack may be increased.
Fig. 13 is a diagram illustrating a vehicle according to still another embodiment of the present disclosure.
Referring to fig. 13, a vehicle C may include the battery pack a or the battery pack B of the previous embodiment. In the example shown, vehicle C includes a battery pack a. Vehicle C may be an electric vehicle or a hybrid vehicle, a vehicle using battery pack a as a fuel source.
The vehicle C according to the present embodiment includes the battery pack a of the previous embodiment, and includes all the advantages of the battery pack a of the previous embodiment. In addition to the vehicle C, it is apparent that the battery pack a may be provided in an energy storage device or other device or equipment that uses the battery pack a as an energy source.
According to various embodiments as described above, a battery pack having improved energy density and a vehicle including the battery pack may be provided.
Although the preferred embodiments of the present disclosure have been shown and described above, the present disclosure is not limited to the above-described specific preferred embodiments, and it will be apparent to those skilled in the art that various modifications may be made thereto without departing from the subject matter of the present disclosure as set forth in the appended claims, and that such modifications fall within the scope of the appended claims.
Meanwhile, terms indicating directions such as up, down, left, right, front, rear, etc. used herein are used for convenience of description only, and it is apparent to those skilled in the art that the terms may be changed depending on the position of a viewer or the elements mentioned.
The present application claims priority from korean patent application No. 10-2019-0124512 filed on the date 10 and 8 of 2019 to korean intellectual property office, the disclosure of which is incorporated herein by reference in its entirety.

Claims (17)

1. A battery pack, the battery pack comprising:
at least one battery module and a battery pack case for accommodating the battery module,
the battery module includes:
a battery cell stack including at least one battery cell; and
a pair of end plates disposed in close contact with the front and rear sides of the battery cell stack on both sides in the longitudinal direction of the battery cells, an
The battery pack case includes:
a tray on the upper surface of which the battery module is mounted; and
a top cover, an outer circumference of which is coupled in contact with an outer circumference of the tray on an upper surface of the tray when the battery module is received inside,
wherein the end plates provide mechanical support to protect the battery cells,
wherein the top cover has a fastening extension at the outer circumference,
wherein the tray has a step at an outer circumference, which is bent upward from the mounting region of the battery module to match the fastening extension, and the step is coupled to the fastening extension by a fastening element provided at a sidewall on the step, and
wherein either end plate of the pair of end plates has a flange disposed at a height between the fastening extension of the top cover and the step of the tray such that the flange is placed on the side wall and the fastening element is inserted into the flange.
2. The battery pack of claim 1, wherein the battery module comprises:
a bus bar frame assembled on the front side and the rear side of the battery cell stack;
an insulating cover coupled to an outer side of the bus bar frame; and
a side plate coupled to the outermost battery cells of the battery cell stack, and
wherein the end plate has a plate-like structure covering the outside of the insulating cover.
3. The battery pack of claim 1, further comprising:
a sealing member interposed between an outer periphery of the tray and an outer periphery of the top cover, which are coupled in contact with each other.
4. The battery pack according to claim 1, wherein the fastening extension portion is bent and extended in an outward direction of the battery pack for fastening to the tray, and the fastening element is inserted into the fastening extension portion.
5. The battery pack according to claim 4, wherein a fastening seat is formed at a bottom of the other end plate of the pair of end plates, and the fastening element is inserted into a bracket mounted in the tray through the fastening seat.
6. The battery pack according to claim 4, wherein a wire harness is provided in a space between the top cover and the side wall.
7. The battery pack of claim 1, wherein the pair of end plates are shared between a plurality of the battery modules to integrally connect the plurality of the battery modules.
8. The battery pack according to claim 7, wherein the battery modules are arranged in a 2 xn matrix in an X direction X Y direction on an XY plane, the battery modules placed side by side along the X direction are arranged such that terminals face each other, and the pair of end plates are shared between the battery modules placed along the Y direction, wherein the X direction is a length direction of the battery cells, and n is 1 or more.
9. The battery pack of claim 8, wherein the fastening extension is bent and extended in an outward direction of the battery pack for fastening to the tray, and the fastening element is inserted into the fastening extension.
10. The battery pack according to claim 9, wherein an end plate provided on an outer side of the battery pack among the pair of end plates has a flange, and
a fastening seat is formed at the bottom of the end plate on the inner side of the battery pack among the pair of end plates, and a fastening element is inserted into a bracket mounted in the tray through the fastening seat.
11. The battery pack of claim 1, wherein the battery module further comprises:
a bus bar frame assembled on the front side and the rear side of the battery cell stack;
an insulating cover coupled to an outer side of the bus bar frame; and
a side plate coupled to the outermost battery cells of the battery cell stack,
wherein two battery modules are coupled by a center plate to form a large module, and at least one large module is included in the battery pack.
12. The battery pack of claim 11, wherein at least two large modules are arranged in one direction and the pair of end plates are shared on the outside of the insulating cover to form a sub-group.
13. The battery pack of claim 12, wherein two subgroups are arranged along a length direction of the battery cells.
14. The battery pack of claim 12, wherein empty spaces are formed between adjacent large modules in the sub-group.
15. The battery of claim 12, wherein the battery side rail is coupled to an outside of at least one of the pair of end plates.
16. The battery pack of claim 15 wherein the battery side beams are side walls of the tray.
17. A vehicle comprising a battery pack according to any one of claims 1 to 16.
CN202080062439.0A 2019-10-08 2020-07-28 Battery pack and vehicle comprising same Active CN114342167B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020190124812A KR20210041950A (en) 2019-10-08 2019-10-08 Battery pack and vehicle comprising the same
KR10-2019-0124812 2019-10-08
PCT/KR2020/009953 WO2021071071A1 (en) 2019-10-08 2020-07-28 Battery pack and vehicle comprising same

Publications (2)

Publication Number Publication Date
CN114342167A CN114342167A (en) 2022-04-12
CN114342167B true CN114342167B (en) 2024-03-08

Family

ID=75437181

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202080062439.0A Active CN114342167B (en) 2019-10-08 2020-07-28 Battery pack and vehicle comprising same

Country Status (7)

Country Link
US (1) US20220352591A1 (en)
EP (1) EP4016662A4 (en)
JP (1) JP7472270B2 (en)
KR (1) KR20210041950A (en)
CN (1) CN114342167B (en)
DE (1) DE202020005976U1 (en)
WO (1) WO2021071071A1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114901510A (en) * 2019-12-30 2022-08-12 沃尔沃卡车集团 Modular electrical energy storage system architecture, method for providing electrical energy to an electric motor of a vehicle and vehicle comprising an electric motor and a modular electrical energy storage system architecture
DE102020205423A1 (en) * 2020-04-29 2021-11-04 Mahle International Gmbh Electric battery
KR20220091958A (en) * 2020-12-24 2022-07-01 에스케이온 주식회사 Pouch Type Battery Cell and Battery Pack Including the Same
CN115347293B (en) * 2021-05-14 2024-07-05 中创新航科技股份有限公司 Battery pack and vehicle
CN113314790B (en) * 2021-05-26 2023-01-31 荣盛盟固利新能源科技有限公司 Square cabin type battery pack
US20240363937A1 (en) * 2021-07-13 2024-10-31 Lg Energy Solution, Ltd. Battery pack
CN113437415B (en) * 2021-08-12 2023-05-16 四川长虹电源有限责任公司 Battery module, deep submersible vehicle and submarine
KR20230037996A (en) 2021-09-10 2023-03-17 에스케이온 주식회사 Battery Assembly and Battery Pack Having the same
US20230136430A1 (en) * 2021-10-28 2023-05-04 GM Global Technology Operations LLC Battery including enclosure for battery cell groups
CN216872135U (en) * 2021-12-22 2022-07-01 宁德时代新能源科技股份有限公司 Battery, battery module and electric energy equipment
KR102664969B1 (en) 2022-01-26 2024-05-10 주식회사 엘지에너지솔루션 Battery pack and a vehicle having the same
KR102695974B1 (en) 2022-04-29 2024-08-19 주식회사 엘지에너지솔루션 A cell stack assembly and a battery pack comprising the cell stack assembly
KR20240008475A (en) 2022-07-12 2024-01-19 주식회사 엘지에너지솔루션 Battery module and battery pack comprising same
CN115133209B (en) * 2022-08-30 2023-02-17 江苏速豹动力科技有限公司 Battery pack for electric truck and electric truck
KR20240030364A (en) * 2022-08-30 2024-03-07 에스케이온 주식회사 Battery module
WO2024090994A1 (en) * 2022-10-25 2024-05-02 주식회사 엘지에너지솔루션 Battery pack and energy storage system comprising same
KR20240074214A (en) 2022-11-21 2024-05-28 주식회사 엘지에너지솔루션 Pack case comprising of a plurality of module housing having respective venting device
KR20240082671A (en) 2022-12-02 2024-06-11 주식회사 엘지에너지솔루션 Battery pack manufacturing method and battery pack manufactured by the method
WO2024136318A1 (en) * 2022-12-22 2024-06-27 주식회사 엘지에너지솔루션 Battery pack and energy storage system comprising same
CN116031551B (en) * 2022-12-28 2024-09-03 厦门海辰储能科技股份有限公司 Module panel, battery module and battery pack
KR102549931B1 (en) * 2023-03-17 2023-06-29 이태옥 Battery assembly for electric vehicles with improved fixing power of secondary batteries and its manufacturing method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101450605A (en) * 2007-12-05 2009-06-10 三菱自动车工业株式会社 Electric vehicle
CN103035975A (en) * 2011-10-10 2013-04-10 三星Sdi株式会社 Battery pack
WO2013084756A1 (en) * 2011-12-10 2013-06-13 三洋電機株式会社 Power source device, vehicle equipped with same and electricity storage device
JP2016046211A (en) * 2014-08-26 2016-04-04 三菱自動車工業株式会社 Heat dissipation structure of battery pack
CN106486622A (en) * 2015-08-28 2017-03-08 三星Sdi株式会社 Rechargeable battery
CN108463903A (en) * 2016-08-12 2018-08-28 株式会社Lg化学 Battery module including belt frame and its frame assembly
KR20190074759A (en) * 2017-12-20 2019-06-28 주식회사 엘지화학 Battery module, battery pack and vehicle comprising the same
CN110100351A (en) * 2017-04-06 2019-08-06 株式会社Lg化学 Battery pack including the thermally conductive medium with shutter airfoil

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910692B2 (en) * 1979-07-16 1984-03-10 大日精化工業株式会社 Sheet-like material and its manufacturing method
CN102484232B (en) 2009-09-02 2017-09-29 Nec能源元器件株式会社 Assembled battery module
DE102009052254A1 (en) 2009-11-06 2011-05-12 Behr Gmbh & Co. Kg Power storage device
WO2013031613A1 (en) * 2011-08-26 2013-03-07 三洋電機株式会社 Power supply device, vehicle provided with same, and power storage device
JP5916500B2 (en) 2012-04-27 2016-05-11 オートモーティブエナジーサプライ株式会社 Assembled battery
KR101632339B1 (en) * 2013-10-31 2016-06-21 주식회사 엘지화학 Battery pack assembly can absorb the external shock
KR101649154B1 (en) * 2014-02-24 2016-08-18 엘지전자 주식회사 Battery Pack
US9820531B2 (en) 2015-05-29 2017-11-21 Nike, Inc. Footwear including an incline adjuster
US10516145B2 (en) 2016-01-26 2019-12-24 Ford Global Technologies, Llc Battery pack array retention
KR102130818B1 (en) 2016-09-28 2020-07-06 주식회사 엘지화학 Secondary battery module having cooling passage, fabrication method and frame assembly for the same
CN109428025B (en) 2017-08-31 2024-08-02 宁德时代新能源科技股份有限公司 Fixing frame, battery unit and battery module
KR102378571B1 (en) * 2017-09-27 2022-03-23 주식회사 엘지에너지솔루션 Battery module, battery pack and vehicle comprising the same
KR102327049B1 (en) 2017-11-06 2021-11-15 주식회사 엘지에너지솔루션 Battery module
CN207818697U (en) 2018-01-29 2018-09-04 宁德时代新能源科技股份有限公司 Battery and battery modules
JP7059737B2 (en) * 2018-03-22 2022-04-26 トヨタ自動車株式会社 Battery pack
CN209357807U (en) 2019-04-12 2019-09-06 宁德时代新能源科技股份有限公司 Battery modules

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101450605A (en) * 2007-12-05 2009-06-10 三菱自动车工业株式会社 Electric vehicle
CN103035975A (en) * 2011-10-10 2013-04-10 三星Sdi株式会社 Battery pack
WO2013084756A1 (en) * 2011-12-10 2013-06-13 三洋電機株式会社 Power source device, vehicle equipped with same and electricity storage device
JP2016046211A (en) * 2014-08-26 2016-04-04 三菱自動車工業株式会社 Heat dissipation structure of battery pack
CN106486622A (en) * 2015-08-28 2017-03-08 三星Sdi株式会社 Rechargeable battery
CN108463903A (en) * 2016-08-12 2018-08-28 株式会社Lg化学 Battery module including belt frame and its frame assembly
CN110100351A (en) * 2017-04-06 2019-08-06 株式会社Lg化学 Battery pack including the thermally conductive medium with shutter airfoil
KR20190074759A (en) * 2017-12-20 2019-06-28 주식회사 엘지화학 Battery module, battery pack and vehicle comprising the same

Also Published As

Publication number Publication date
DE202020005976U1 (en) 2023-11-28
JP7472270B2 (en) 2024-04-22
JP2022545267A (en) 2022-10-26
WO2021071071A1 (en) 2021-04-15
EP4016662A4 (en) 2023-03-08
US20220352591A1 (en) 2022-11-03
CN114342167A (en) 2022-04-12
KR20210041950A (en) 2021-04-16
EP4016662A1 (en) 2022-06-22

Similar Documents

Publication Publication Date Title
CN114342167B (en) Battery pack and vehicle comprising same
JP7037005B2 (en) Battery pack with louver fin shaped heat transfer medium
EP3412486B1 (en) Battery mounting structure
KR102032504B1 (en) Battery Module improved impact resistance
KR101794265B1 (en) Battery pack having reinforcement bead
EP1994582B1 (en) Middle or large-sized battery module
JP6049745B2 (en) Medium and large battery pack assembly
EP2685527B1 (en) Battery pack having improved safety
EP2530764B1 (en) Middle or large-sized battery module
KR102313023B1 (en) Battery Pack Having Battery Module
US20130045403A1 (en) Battery module having novel structure
KR101799565B1 (en) Battery Pack of Improved Safety
EP3984865A1 (en) Underbody for vehicle
JP7136998B2 (en) Battery packs and electronic devices including cover structures and automobiles
KR20130001381A (en) Battery module assembly and battery pack comprising the same
JP2023511181A (en) BATTERY MODULE, BATTERY PACK AND MOTOR VEHICLE CONTAINING THE SAME, AND METHOD FOR MANUFACTURING BATTERY PACK
CN109980138B (en) Battery module
KR20240058044A (en) Battery pack and energy storage system comprising the same
KR20240012314A (en) Battery pack and vehicle including same

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant